Highly stable and biocompatible zwitterionic dendrimer-encapsulated palladium nanoparticles that maintain their catalytic activity in bacterial solution

2018 ◽  
Vol 42 (24) ◽  
pp. 19740-19748 ◽  
Author(s):  
Longgang Wang ◽  
Jin Zhang ◽  
Xiaolei Guo ◽  
Shengfu Chen ◽  
Yanshuai Cui ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
Catalytic Efficiency ◽  
Artificial Enzyme

This study offers a method for constructing an artificial enzyme (Pdn-G5MC), which maintains its catalytic efficiency in bacterial solution.

scholarly journals Green Synthesis of Reduced Graphene Oxide-Supported Palladium Nanoparticles by Coleus amboinicus and Its Enhanced Catalytic Efficiency and Antibacterial Activity

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 134
Author(s):  
Koduru Mallikarjuna ◽  
Lebaka Veeranjaneya Reddy ◽  
Sarah Al-Rasheed ◽  
Arifullah Mohammed ◽  
Sreedevi Gedi ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Palladium Nanoparticles ◽  
Catalytic Efficiency ◽  
Tem Analysis ◽  
Reduced Graphene ◽  
Supported Palladium ◽  
Medical Disciplines ◽  
Coleus Amboinicus

Novel reduced graphene oxide-supported palladium nanoparticles (RGO-PN) were synthesized under ultrasonication, a method that utilizes Coleus amboinicus as a bio-reduction agent. Green synthesized RGO-PN nanoparticles with a crystallite size in the range of 40–50 nm were confirmed in X-ray diffraction (XRD) spectra. RGO-PN show an absorption peak at 220 nm while reduced graphene oxide (RGO) shows its maximal absorbance at 210 nm. The scanning electron microscope image revealed that 40-nm-sized spherical-shaped palladium nanoparticles stick well to reduced graphene oxide sheets, which is consistent and correlated well with the XRD pattern. Moreover, a high-resolution morphological image of RGO-PN100 was obtained by TEM analysis, which shows the anchoring of palladium nanoparticles (PN) on RGO nanosheets. Green synthesized RGO-PN100 nanoparticles from Coleus amboinicus show better reduction kinetics for 4-nitrophenol at 40 min, suggesting that RGO-PN prepared from Coleus amboinicus serve as an excellent catalytic reducing agent. Furthermore, they show remarkable antibacterial activity against Escherichia coli (ATCC 25922). Thus, green synthesized RGO-supported palladium nanoparticles demonstrated that enhanced catalytic activity and antibacterial activity both play an important role in the environmental and medical disciplines.

In situimmobilization of palladium nanoparticles in microfluidic reactors and assessment of their catalytic activity

2010 ◽  
Vol 21 (32) ◽  
pp. 325605 ◽  
Author(s):  
Rui Lin ◽  
Ruel G Freemantle ◽  
Nicholas M Kelly ◽  
Thomas R Fielitz ◽  
Sherine O Obare ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
Microfluidic Reactors

scholarly journals Target-triggered cascade assembly of a catalytic network as an artificial enzyme for highly efficient sensing

2017 ◽  
Vol 8 (7) ◽  
pp. 4833-4839 ◽  
Author(s):  
Lei Zhang ◽  
Fengjiao Ma ◽  
Jianping Lei ◽  
Jintong Liu ◽  
Huangxian Ju
Keyword(s):  
Catalytic Activity ◽  
Horseradish Peroxidase ◽  
Signal Amplification ◽  
High Catalytic Activity ◽  
Artificial Enzyme ◽  
Highly Efficient ◽  
Catalytic Network

A hemin-based enzymatic network is constructed with high catalytic activity that is comparable to natural horseradish peroxidaseviatriple signal amplification.

Palladium nanoparticles supported on polyvinylpyridine: Catalytic activity in Heck-type reactions and XPS structural studies

2009 ◽  
Vol 262 (2) ◽  
pp. 287-293 ◽  
Author(s):  
Claudio Evangelisti ◽  
Nicoletta Panziera ◽  
Paolo Pertici ◽  
Giovanni Vitulli ◽  
Piero Salvadori ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
Structural Studies

Promoting inherent catalytic activity and stability of TiO2 supported Pt single-atoms at CeOx-TiO2 interfaces

2021 ◽  
Author(s):  
Mi Yoo ◽  
Eunji Kang ◽  
Hyuk Choi ◽  
Hyunwoo Ha ◽  
Han Seul Choi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Efficiency ◽  
Reaction Centers ◽  
Next Generation ◽  
Single Atoms ◽  
General Concern

Single-atoms Single-atoms (SAs) with atomically coordinated reaction centers are considered the next generation catalyst that can reveal exceptional catalytic efficiency. However, the general concern about thermodynamic vulnerabilities of the SAs...

Structure and supramolecular organization of tri-n-butyl(octadecyl)phosphonium tetrafluoroborate and its influence on catalytic activity of stabilized palladium nanoparticles

2015 ◽  
Vol 64 (10) ◽  
pp. 2486-2492 ◽  
Author(s):  
D. M. Arkhipova ◽  
V. V. Ermolaev ◽  
V. A. Miluykov ◽  
G. A. Gaynanova ◽  
F. G. Valeeva ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
Supramolecular Organization

PHOTO-CATALYTIC ACTIVITY AND PHOTO-ABSORPTION OF PLASMA-SPRAYED NANO-STRUCTURED TiO2 COATINGS

2010 ◽  
Vol 24 (31) ◽  
pp. 6115-6127 ◽  
Author(s):  
MARYAMOSSADAT BOZORGTABAR ◽  
MEHDI SALEHI ◽  
MOHAMMADREZA RAHIMIPOUR ◽  
MOHAMMADREZA JAFARPOUR
Keyword(s):  
Catalytic Activity ◽  
Flow Rate ◽  
Test Chamber ◽  
Catalytic Efficiency ◽  
Surface Characteristics ◽  
Catalytic Performance ◽  
Atmospheric Plasma ◽  
Argon Flow Rate ◽  
Photo Catalytic Activity ◽  
Argon Flow

Titanium dioxide coatings were deposited by utilizing atmospheric plasma-spraying system. The agglomerated P25/20 nano-powder and different spraying parameters (e.g., Argon flow rate and spray distance) were used to determine their influences on the microstructure, crystalline structure, photo-absorption, and photo-catalytic performance of the coatings. The microstructure and phases of as-sprayed TiO 2 coatings were characterized by scanning electron microscope SEM and X-ray diffraction, respectively. Surface characteristics were investigated by Fourier Transform Infrared. Photo-catalytic efficiency of the elaborated samples was also determined in an environmental test chamber set-up and evaluated from the conversion rate of ethanol. The photo-absorption was determined by UV–Vis spectrophotometer. The as-sprayed TiO2 coating was photo-catalytically reactive for the degradation of ethanol. The photo-catalytic activity was influenced by spray conditions. It is found that the photo-catalytic activity is significantly influenced by anatase content, surface area, and surface state. The results showed that the argon flow rate has an influence on the microstructure, anatase content, and photo-catalytic activity of the TiO 2 coatings.

Palladium clusters, free and supported on surfaces, and applications in hydrogen storage

2021 ◽  
Author(s):  
Julio A. Alonso ◽  
María J. López
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Chemical Reactions ◽  
Palladium Nanoparticles ◽  
Periodic Table ◽  
Late Transition Metal ◽  
Palladium Clusters ◽  
Transition Metal Element ◽  
Metal Element ◽  
Late Transition

Palladium is a late transition metal element in the 4d row of the periodic table. Palladium nanoparticles show an efficient catalytic activity and selectivity in a number of chemical reactions....

Gamma radiation-assisted in situ synthesis of palladium nanoparticles supported on ethylenediamine-functionalized polypropylene fabric as an efficient catalyst for reduction of 4-nitrophenol

2020 ◽  
Vol 44 (44) ◽  
pp. 19337-19350
Author(s):  
Girlie Eunice P. Lopez ◽  
Jordan F. Madrid ◽  
Drexel H. Camacho
Keyword(s):  
Catalytic Activity ◽  
Gamma Radiation ◽  
Palladium Nanoparticles ◽  
In Situ Synthesis ◽  
Chemical Transformations ◽  
Efficient Catalyst ◽  
Polypropylene Fabric ◽  
P Immobilization

Immobilization of Pd nanometals on a functionalized non-woven polypropylene fabric offers heterogenous catalytic activity in many chemical transformations and convenient separation from the reaction mixture.

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